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Synthesis 1986; 1986(5): 366-371
DOI: 10.1055/s-1986-31637
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An Efficient Synthesis of Benzofluorenes Via α-Alkoxycarbonyldiarylmethyl Cations

A. C. Hopkinson* , E. Lee-Ruff, M. Maleki
  • *Department of Chemistry, York University, Toronto, Ontario M3J 1P3, Canada
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Publication Date:
27 September 2002 (online)

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Rearrangements of α-alkoxycarbonyldiarylmethyl cations lead to 9-fluorenecarboxylic esters. Decarboxylation of these esters generates the fluorene derivatives 9a-f. The precursors to the cations are the α-hydroxyesters 6a-g.This conversion constitutes a facile synthesis of benzofluorenes.

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